Smithy CNC Mills - Manual (Page 100)

just a few significant digits, or the arc is a strange number of degrees, then
there will be trouble with EMC. The R word clears up all that mess, and is a lot
easier to work with, anyway. If the arc is more than 180 degrees, R should be
negative.
9.5 Tool Compensation Sources
This unit borrows heavily from the published works of Tom Kramer and Fred
Proctor at NIST and the cutter compensation web page of Jon Elson.
Papers by Tom Kramer and Fred Proctor
http://www.isd.mel.nist.gov/personnel/kramer/publications.html
http://www.isd.mel.nist.gov/personnel/kramer/pubs/RS274NGC_22.pdf
http://www.isd.mel.nist.gov/personnel/kramer/pubs/RS274VGER_11.pdf
Pages by Jon Elson
http://artsci.wustl.edu/~jmelson/
http://206.19.206.56/diacomp.htm
http://206.19.206.56/lencomp.htm
SmithyCNC Programmer’s Reference Manual: Tool File & Compensation
SmithyCNC Programmer’s Reference Manual: Tool File and Compensation 9-18